Isaac lamplugh



Quitte tartes getraut @fitta ISAAC LAMPLUGH, CF PEORI, LLNCIS.

Letters Patent .Nm 63,398, dated April. 2, 1867.

IMPROVED SHEARING AND PUNGHING MACHINE.

.TO ALL WHOM IT MAY CONCERN:

Be it known that I, ISAAC LAMPLUGB, of Peoria, in the county of Peoria, and State of Illinois, have invented a Combined Shearing and Punching Machine; and I do hereby declare that the following is a full, clear, and exact description thereof', reference being had tothe accompanying drawings, making a part of this specication, in which- Figure 1 is a perspective View of the machine.

Figures 2 and 3 are side elevations of the machine, showing the shear and punch in different positions.

Figure 4 is a cross-section, taken in the vertical plane indicated by red line z a; in iig. 3.

Figure 5 is a top view ofthe machine.

Similar letters of reference indicate corresponding parts in the several iigures.

This invention has for its object the combination of a device for punching metal, with a shear for cutting metal, in such manner that a compound lever is obtained through the medium ofthe shear-blade for operating the punch simultaneously with the movement of said shear, as will be hereinafter explained.

To 'enable others skilled in the art to understand my invention, Iwill describe its construction and operation.

Theifranie to which the' punching and shearing devices are applied, is cast in one piece, and so constructed that it can be iirinly secured to a bench, in a position for using such devices, by means of a clamp or vise. This frame consists of a base-piece, A, extending` the entire length of the machine, which is made suiiiciently narrow to be received and held by a common bench-vise. At one end, and on the back side of the base-plate, A, a recess is formed in it for receiving the stationary shear-blade a, the upper cutting edge of which projects slightly above the upper horizontal surface ot' plate A, as shown in gs. 1, 2, and 3. Shear-plate a may be applied so that it can be removed and sharpened at pleasure, and also so that it can be adjusted and set higher as its cutting edge is worn down by grinding. B represents the elevated portion of the frame, which is adapted for receiving the movable shear-blade C, the front surface of which blade is in the vertical plane of the back surface ofthe stationary shear-blade a, which is below it, as shown in figs. l and 5. The movable shear-blade C may be constructed of the form shown in the drawings, with oisets b c and c, and also with a steel cutting plate inserted into its front face, as represcntedin the drawings. The blade Chas one or more holes through it, at c', through one of which a pin, e, passes, that forms a pivot connection of the blade to its frame B, and between this frame and an overhanging oifset, d, thereof. The projection Z1, of blade C, is connected to a vibrating lever-arm, D, by means of linlis,ff; and lever D is pivoted directly above the blade C to the portion l/ B ot' the frame, so that this blade can be forcibly vibrated by vibrating said lever. To the oifset e, links g g are pivotcd, the upper ends of which are connected to the longest arm of a lever, F, which has its fulcruin upon a vertical standard, Bl, of the frame, as clearly shown in thc drawings. The short of the lever F is pivcted to the upper end ot' a punch-stock, 71., which is guided by thc olset B2 of standard Bl, and which is raised and depressed by the movements of lever-arm D, as indicated by gs.- 2 and 3. 1lhe lower endof the stock h has a socliet formed in it for receiving a` punch, which latter may be lsecured in place by a set-screw, or any other suitable fastening.- Dircctly below the punch is the perforated punch-bed z', which may be made movable for adapting the machine for punching holes of dilerent sizes. The opening below the punch-bed for the escape of the bits of nretal is shown in the sectional view, iig. 4.

The machine which I have thus described is constructed so as to be portable and compact, so that workmen can take it from place to place as circumstances may require, and avoid the necessity of having two separate machines, with lever attachments for operating each one. It will be seen that the movable shear-blade serves as one of three levers for moving the punch-stock, and that punching and shearing can be performed by the movement of the lever D. This lever D may be curved so that its handle will be convenient to a person standing at the punching end ofthe frame A B, thus' enabling suoli person to operate the shear and punch at the same time, and giving the person standing at the shearing end oi' the machine freedom of both hands to hold the plate which is being shcared. If desirable, lever F may be connected to the upper ends of linksf, so that the punch will descend simultaneously with the descent ofthe shear-bladc.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The improved combined punching and shearing machine, constructed and operating substantially in the manner and for the purposes described.

ISAAC LAMPLUGH.

Witnesses:

J. S. SrsvENs, J. A. VAN DnELzsn. 

